Welcome to the tutorial on creating complex road Intersections in Houdini.

There are many tutorials about road intersections and I have seen many great tools that allow you to achieve the desired results. But frequently they are too complicated or not universal enough.

So I decided to share my approach which is one of the simplest ones that I've seen and, more importantly - it's effective.

Yes there will be some VEX, but the logic behind it is very simple and it will only take up the first third of our setup. And you will learn a lot of cool techniques!

And also we will touch on some topics discussed in previous video:
   • Randomize Points Within Curve in Houdini  

00:00 - Intro
01:50 - Labs Road Tool comparison
02:59 - Concept overview
04:28 - Initial setup
05:08 - Handling curves intersections
10:15 - Cut primitives
13:53 - Middle cut. Handling vertex order
15:32 - Find intersection points.
18:22 - Generate Id attribute
21:30 - Get road crossings curves
25:27 - Radial sort
29:20 - Creating crossings geometry
39:53 - Combine groups together
40:39 - Example of curve smoothing
42:10 - Tweaking the parameters
43:30 - Fix polygon normals

#houdini #procedural #modeling #road #crossing #intersections #intersection #curves